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3wmike 11-02-2025 01:20 PM

Harman Collins distributor
 

Do you know if there are any spare parts available for the HC distributor with doble coils ?
And also what kind/size should the resistor have (12V) ?
Any other important to think about ?
Thanks
Michael

rotorwrench 11-02-2025 01:53 PM

Re: Harman Collins distributor
 

There used to be a guy here that got into making parts like the rotor for the Harmon Collins dual coil set up. Dzusfast is his handle but he hasn't posted in a long time. Ballast resistors for 1.5 Ohm coils are generally 1 to 1.5 Ohms. A person can use 3.0-Ohm coils without a ballast on 12-volt systems.

KiWinUS 11-02-2025 02:05 PM

Re: Harman Collins distributor
 

Quote:

Originally Posted by rotorwrench (Post 2420962)
There used to be a guy here that got into making parts like the rotor for the Harmon Collins dual coil set up. Dzusfast is his handle but he hasn't posted in a long time. Ballast resistors for 1.5 Ohm coils are generally 1 to 1.5 Ohms. A person can use 3.0-Ohm coils without a ballast on 12-volt systems.

Unfortunately I believe that he is no longer with us.

tubman 11-02-2025 02:33 PM

Re: Harman Collins distributor
 

The simple answer is to use Ohm's Law to make sure you have about 4 amps going through the points. Use your multi-meter to do some measurements and chose a ballast resistor of the proper resistance. You should be in the ball park for a good running engine.

Terry,OH 11-03-2025 08:20 AM

Re: Harman Collins distributor
 

No more parts unless you can find some on the auction site, Dzusfast reproduced the rotor and the intermediate cap. The coils determine weather you need a resistor or not. You can still find the outer caps that work and the points and condensers.

F1 MIKE 11-03-2025 01:08 PM

Re: Harman Collins distributor
 

Orig ones used Bendix AIR CRAFT magneto points .

topfuel724 11-03-2025 03:27 PM

Re: Harman Collins distributor
 

You might try Tom Cirello at Cirello Magneto's as he was rebuilding the Harmon-Collins Magnetos for the early flatheads. There might be some parts that interchange between the Mag's and the Dual Coil distributor. He has rebuilt three of the H-C mag's for me over the years with excellent performance.

3wmike 11-04-2025 10:11 AM

Re: Harman Collins distributor
 

Thank You all for the answers :)


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